Test 2 Review

Key Terms:
Luster, Fracture, Cleavage, Mineral, Crystal, Organic, Inorganic

Key Concepts:

• Characteristics of Mineral
• Differences between Quartz, Coal and Glass
• Mohs Hardness Scale
• Formation of Minerals: Beneath Earth's surface, above Earth's surface and evaporation of solution
• Drawing Bohr and Lewis structure of the following elements: Ca, Na, C, O, S
• Advantage and disadvantage of color as a physical properties
• Chemical Composition of Quartz: Silicate

Review for Test 2

Dear Students,

Please the following Minerals presentation as a guideline.

Best Regards,

Reading Comprehension - Layers of Earth

Earth's Layers 

Scientists who study the earth's layers are called geologists.  Since they cannot see the inside of the earth they use geographical clues to help them.  These clues are gathered from activities such as volcanoes and earthquakes.  From these clues geologists hypothesize (make an educated guess) what they think the earth actually looks like.

Geologists believe the earth is neither liquid nor solid all the way through.  It is a made up of different layers.  Some of these layers are solid.  Some are liquid, and some are both.  The layers of the earth have special names.  They are the crust, the mantle, and the core.  These layers vary in width and temperature.  Look at the picture below.

The thin crust, or outer layer of the earth is made mostly of rock.  The thickness of this layer varies from 3 to 34 miles.  Below the crust is the mantle.  The mantle is about 1,800 miles thick and made mostly of solid rock.  It is the thickest layer of the Earth. The mantle is also very hot - about 5,400 degrees F in some spots.  The center of the earth is called the core.  It is about 2,200 miles thick.  The core is extremely hot - about 7,200 degrees F.  The core is further divided into an inner core and an outer core.  The outer core is a liquid layer of melted nickel and iron.  The inner core is made of solid nickel and iron.

Directions: Answer the questions about the inside of the earth.

1. A scientist who studies the earth is called a .

2. To hypothesize means to

 read
 make a guess
 make an educated guess
 cut apart and observe

3. The thin outermost layer of the earth is called the.

4. The layer below the thin outermost layer is called the .

5. The center of the earth is called the .

6. The layers of the earth vary in width and .

7. Which layer of the earth is the hottest?

 crust
 mantle
 core

8. Which of the following statements is true?

 The mantle of the earth is made of solid nickel and iron.
 The crust of the earth is made of solid nickel and iron.
 The inner core is made of solid nickel and iron.

9. The  is the thinnest part of the earth.

10. The  is the thickest part of the earth.

(adapted from http://www.myschoolhouse.com/courses/O/1/69.asp)

Earth's Layers

Dear Students,

You can use the following notes and your class handout to study for Quiz 4 (OUR LAST QUIZ) on Tuesday October 28, 2014.

GOOD LUCK

Mr. Fahad

CONGRATULATION 9B1

Dear 9B1,

I am really proud of you. Your class average in quiz 3 is 80.4% :)

Keep the hard work.

Best Regards,

Mr. Fahad

What is a Mineral?

The Periodic Table

Classification of Matter

Atom Structure

Chemical Bond Song

Dear Students,

Watch the following clip. It's amazing and will help you to understand chemical bonds.

Week 6 Plan

Dear Students,

On this week, we are going to study the following materials:

• Lesson 1 - Covalent bond and Ionic bond
• Lesson 2 - Quiz 3 & Finishing Chapter 3 (Acids and Bases)
• Lesson 3 - Introduction to Minerals - Part 1
• Lesson 4 - Introduction to Minerals - Part 2

Homework List

• Read 4.1 - Cornell's Note
• Read 4.2 - Cornell's Note

Lab - Mineral Brochure

Best Regards, 

Mr. Fahad

Quiz 3

Dear Students,

On Tuesday Oct.21, 2014 we will have our third quiz. Please study the following materials:

• Bohr Model
• Periodic Table (First 22 elements)
• Lewis Structure
• Atom Structure 
• Atomic No. and Atomic Mass

GOOD LUCK

Mr. Fahad